It is indeed in Dishonored 1. It’s the easiest way to get the "5 unintentional suicides " achievement. Possess, take them up to a power wall, un-possess, they pitch forward & vaporize. Not that easy but easier than stopping time, possessing a shooter, and moving him in the path of a bullet.
Note - exiting possession is not an instant knock-out. They’ll be ill for a moment, giving you time to choke or otherwise deal with.